中国电气工程学报（英文） ›› 2017, Vol. 3 ›› Issue (1): 27-32.

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  • 发布日期:2019-11-01

Design and Analysis of an Outer-Rotor Parallel-Hybrid-Excited Vernier Machine

Wenlong Li1,2,*, T.W. Ching2, K.T. Chau3   

  1. 1. College of Computer Science and Software Engineering, Shenzhen University, Shenzhen, 518060, China;
    2. Faculty of Science and Technology, University of Macau, Macao, 999078, China;
    3. Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China
  • Published:2019-11-01
  • Contact: E-mail: liwl@ieee.org.
  • About author:Wenlong Li received his B. Eng in 2005 from Sichuan University, China, M. Eng in 2008 from University of Science and Technology of China, China, and Ph. D in 2012 from The University of Hong Kong, Hong Kong, China, all in electrical engineering. Currently, he is with Shenzhen University, Shenzhen, China, and also a Visiting Fellow to. University of Macau, Macao, China. His research interests include electrical machine design, analysis and applications, with special interests for the areas of renewable energy systems and electromobility. He has published over 60 peer-viewed technical papers and 3 invited book chapters and holds 2 patents in these area. T. W. Ching the BEng and MSc degrees in Electrical Engineering from The Hong Kong Polytechnic and the PhD degree in Electrical and Electronic Engineering from the University of Hong Kong. He served in the industry with 11 years in CLP Power HK Ltd and 2 years with The Hong Kong Electric Co Ltd. He is currently an Assistant Professor of the University of Macau and a member of International Research Centre for Electric Vehicles. His research interests include building services, clean energy and environment, energy conversion and utilization, engineering economics, power electronic converters, variable speed drives, electric vehicles, charging and infrastructures. K. T. Chau received the B.Sc.(Eng.) with 1st Class Hons, M.Phil., and Ph.D. degrees in electrical and electronic engineering from The University of Hong Kong, Hong Kong, in 1988, 1991, and 1993, respectively. Since 1995, he has been with The University of Hong Kong, where he is currently a Professor in the Department of Electrical and Electronic Engineering. He has published 7 books, 9 book chapters and over 250 refereed journal papers. His research interests include electric and hybrid vehicles, machines and drives, and renewable energy systems. Professor Chau is Fellow of the IEEE, IET and HKIE. He currently serves as Co-editor of the Journal of Asian Electric Vehicles. He was the recipient of the Changjiang Chair Professorship from the Ministry of Education, China, the Environmental Excellence in Transportation Award for Education, Training, and Public Awareness from the SAE International, and the Award for Innovative Excellence in Teaching, Learning and Technology at the International Conference on College Teaching and Learning. (http://www.eee.hku.hk/people/ktchau/)
  • Supported by:
    Supported in part by the National Natural Science Foundation of China under Grant 51607114, in part by China Postdoctoral Science Foundation under Grant 2016M600673, and in part by Research Council of the University of Macau under Grant MYRG2017-00158-FST.

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Abstract: In this paper, an outer-rotor parallel-hybrid-excited vernier machine is proposed. In order to realize the parallel hybrid excitation, the homopolar configuration is adopted to artfully combine the permanent magnet (PM) flux path and the electromagnet flux path together. Firstly, the structure of the proposed machine is presented. Secondly, its operating principle is studied and discussed. Thirdly, its performance for flux regulation is analyzed based on the 3-D finite element analysis. Finally, the prototype of the proposed machine is manufactured and tested to verify the analytical results.

Key words: Flux control, parallel hybrid excitation, PM machine, vernier machine